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Material data sheet

Steel grade

43MnB5-3*

General Information

Grade SB43M14B is a boron steel for general purposes without any specified mechanical properties. SB43M14B has the highest level of hardness and wear resistance achievable in the standard range of boron steels. Therefore is it an excellent choice for use in machine knives and garden tools.

* Designation followed by "*" is not an official EN standard grade but named according to the rules in EN 10027.

Similar designations

SB43M14B - 43MnB5-3, 1.3563

Chemical composition

Variant

Cast

Weldability

C %

Si %

Mn %

P %

S %

Cr %

B %

SB43M14B

CC

CEV 0.72max

Min

0.40

0.15

1.30

-

-

0.10

0.0010

Pcm 0.55max

Max

0.46

0.35

1.50

0.035

0.035

0.30

0.0060

Mechanical Properties

Variant

Rp0.2 * Reh, ** Rel

Transformation temperatures

Temperature °C

MS

310

AC1

719

AC3

752

Hardenability

Other properties (typical values)

Youngs module (GPa)

Poisson´s ratio (-)

Shear module (GPa)

Density (kg/m3)

210

0.3

80

7800

Average CTE 20-300°C (µm/m°K)

Specific heat capacity 50/100°C (J/kg°K)

Thermal conductivity Ambient temperature (W/m°K)

Electrical resistivityAmbient temperature (µΩm)

12

460 - 480

40 - 45

0.20 - 0.25

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The information in this document is for illustrative purposes only. The data and examples are only general recommendations and not a warranty or a guarantee. The suitability of a product for a specific application can be confirmed only by Ovako once given the actual conditions.The purchaser of an Ovako product has the responsibility to ascertain and control the applicability of the products before using them. Continuous development may necessitate changes in technical data without notice. This document is only valid for Ovako material. Other material, covering the same international specifications, does not necessarily comply with the properties presented in this document.